Stiffness testing device 4171T

bending resistancemanualmotorized

GurleyTM bending resistance/stiffness testers incorporate an intelligent testing mechanism that is based on a practical physical concept. The tester comprises a stable, well-balanced pendulum/pointer that pivots at the center point. The pendulum can be fixed with loads at three points below the center point. It is fixed with cylinder-shaped, jewel bearings which allow it to oscillate freely from left to right and vice versa. The pendulum is therefore, extremely sensitive and oscillates to even the lightest of loads. The sample to be tested is fastened to a clamp that is either a parallel clamp for flat sheet objects or a tubing clamp for objects like catheters etc. The clamp is fixed on a motor-powered arm that also oscillates. The lower 0.25" area of the sample is positioned to overlap the top edge of the pendulum which is shaped like a triangular vane. When the sample moves against the top of the pointer, the pointer also moves. The sample bends and releases the pendulum. INSTRUMENT PRINCIPLE - ALL VERSIONS All Genuine GurleyTM bending resistance/stiffness testers are based on the same physical principle. each instrument consists of a balanced pendulum or pointer which is center-pivoted and can be weighted at three points below its center. The pointer moves freely in both left and right directions on cylindrical jewel bearings which make the mechanism highly sensitive even to light-weighted materials. A sample of a specific size is attached to a clamp (parallel for flat sheet materials and tubing clamp for catheters, etc.), which in turn is located on one of several positions on a